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Here is a silent video with written instructions for each phase of the trick. It can be displayed on a loop while students are figuring out the trick, to remind them of the instructions if they forget.
Imagine you have six different colours of paint. You paint a cube using a different colour for each of the six faces. How many different cubes can be painted using the same set of six colours?
Given a 2 by 2 by 2 skeletal cube with one route `down' the cube. How many routes are there from A to B?